EP1929817B1 - Method of enhancing voice communication between a group of users in a network - Google Patents
Method of enhancing voice communication between a group of users in a network Download PDFInfo
- Publication number
- EP1929817B1 EP1929817B1 EP06779599A EP06779599A EP1929817B1 EP 1929817 B1 EP1929817 B1 EP 1929817B1 EP 06779599 A EP06779599 A EP 06779599A EP 06779599 A EP06779599 A EP 06779599A EP 1929817 B1 EP1929817 B1 EP 1929817B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- message
- group
- uplink
- identifier
- busy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 19
- 230000002708 enhancing effect Effects 0.000 title claims description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000011664 signaling Effects 0.000 description 9
- 238000010295 mobile communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
- H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
Definitions
- This invention relates to a method of enhancing voice communication between a group of users in a network, in particular for global system for mobile communication (GSM) based systems, such as GSM edge radio access network (GERAN).
- GSM global system for mobile communication
- GERAN GSM edge radio access network
- GERAN includes a voice group service (VGCS) whereby multiple users can communicate. Whichever user has control of the uplink, blocks all other users from speaking. More recently, a change in the talker has been followed by an indication of who the party talking is.
- VGCS voice group service
- this enhancement requires additional signalling and there is a delay in providing the information to other members of the group.
- identity information is provided by stealing frames from the voice channel, which can have an impact on voice quality for the call, under certain circumstances.
- WO2005/055632 discloses a method and system for providing the active members of a Voice Group Call Service with additional information.
- the additional information is transmitted in a message on the associated control channel for the downlink traffic channel of the voice group simultaneously with a voice call.
- US2004/077358 discloses Methods and systems for distributed arbitration in a push-to-talk communications system.
- User communications terminals execute a distributed arbitration algorithm to determine which terminal should have possession of a communications channel among terminals with simultaneously pending talk requests.
- a server may notify the terminals of the identification of a terminal that is using the communications channel.
- EP1734772 is prior art under Article 54(3) EPC, and discloses method of uplink preemption by UEs later entering a trunking group with an established group call. It teaches “UPLINK FREE” and “UPLINK BUSY” messages being sent to user equipment to notify them of the status of an uplink channel.
- a method of enhancing communication between a group of users in a network voice within a voice group call service is provided, as defined in claim 1.
- a second aspect of the present invention provides a base station as defined in Claim 7.
- talker identity is combined with other data which is already sent and is transmitted in an existing message with the other data.
- the data and identifier are transmitted in an existing message.
- the identifier is transmitted across a network to base station interface.
- the interface is between a mobile switching centre and a base station controller.
- the data and identifier are transmitted across an air interface between a base station and the users.
- the data and identifier are contained within one radio block on the air interface.
- the existing message is an uplink busy message.
- the mobile terminal is one of a mobile telephone, a personal digital assistant, or a personal computer.
- the identifier is a pre-allocated talker identifier.
- the information appears on a visual display of the other users.
- the network is a mobile communication network.
- the mobile communication network is a global system for mobile communication network.
- FIG. 1 illustrates a system in which the method of the present invention is carried out.
- a network 1 communicates with mobile devices (MS) 5,6,7,8 via different base stations according to the position of the mobile device.
- MS mobile devices
- BSS base station sub-system
- a second BSS 11 communicates with two other MSs 5, 6.
- Two way communication is possible over an interface 10 between a mobile switching centre (MSC) 2 in the network and a base station controller (BSC) 4 in each base station subsystem (BSS) 3, 11
- the BSS is made up of the BSC 4 and a number of base station transceivers (BTS) 12.
- the BSC connects to the MSC and the BTS provides a radio interface to the MS.
- the base station controller 4 and mobile devices 7, 8 communicate via the BTS over an air interface 13.
- Each mobile device is provided with a display 9.
- the network transmits status messages on the downlink of the voice group channel to indicate whether the uplink is free or busy, using an UPLINK FREE and an UPLINK BUSY message respectively. If the uplink is busy, then the network may also indicate a priority of a call that is using the uplink. Both the UPLINK FREE and UPLINK BUSY messages are sent on the FACCH of the voice group channel. Thus, the transmission of the UPLINK BUSY has an impact on the voice quality of the speech received on the downlink of the voice group call channel.
- Each UPLINK FREE and UPLINK BUSY message is contained within one radio block. Based on current performance, one radio block takes approximately 20ms to transmit and contains 184 bits of information, or 23 bytes. In the voice group call service, the talker typically talks on average for 5s. Thus, in this scenario, the transmission of the talker identity steals one block in 250, resulting in a frame erasure rate (FER) of 0.4%. If the UPLINK BUSY messages are transmitted every 5s, as currently proposed in the standards, then this results in a combined FER of 0.8%, assuming that 2 blocks are stolen in every 250.
- FER frame erasure rate
- FIG. 2 signalling information required for a voice group call uplink access in an anchor MSC (MSC-A) 35 with talker priority given to "privileged subscriber," in accordance with the current standardised solution for the transmission of the talker information, is illustrated.
- a first base station sub-system (BSS1) 20 sends an UPLINK FREE message 21 to a mobile station (MS) 41.
- the MS sends an UPLINK ACCESS request 23 for privileged subscriber to the BSS 20 which sends a VGCS UPLINK GRANT message 24 and an UPLINK BUSY message 25, for privileged subscriber, back to the MS.
- UPLINK BUSY messages are sent in each of the cells that the BSS parents that are in the group call area.
- a set asynchronous balanced mode (SABM) start-up command 26 is sent from the MS to the BSS including a layer 3 message (L3msg), such as a talker indication message which contains the mobile's identity.
- L3msg layer 3 message
- the BSS replies with an unnumbered acknowledgement (UA) 28.
- An UPLINK REQUEST 27 is sent to MSC-A 35 which may reply with an UPLINK REQUEST ACKNOWLEDGE 30 to the BSC that originated the uplink request and an UPLINK SEIZED command to each of the remaining connected BSCs (not shown) that are in the group call area
- the mobile device has sent its identifier, typically, IMSI, in the L3msg when establishing the signalling link on the air interface.
- the L3msg is then included in the UPLINK REQUEST message that is sent by the BSC to the mobile switching centre and the MSC-A checks a subscription for talker priority and retrieves additional information, such as a talker identifier from a visiting location register (not shown) which is what is sent to other members of the group.
- the sending of the Uplink Request 27 is delayed until the link on the air interface is established.
- the link is established by a SABM/UA exchange, the purpose of which is so that the identity of the MS can be obtained and included in the Uplink Request that is sent
- the additional information when present, is then transmitted 32A by MSC-A to the first BSS 20 and also transmitted 32B to each other connected BSC in the group call area.
- the BSS then transmits this information as a separate VGCS ADD info message 33 on the air interface.
- MSC-A 35 sends a FORW._GROUP CALL_SIGN. message 29 to relay MSC (MSC-R) 36 including an uplink seized command, privileged subscriber data and the VGCS additional information
- MSC-R relay MSC
- the MSC-R then sends an UPLINK SEIZED 39B for privileged subscriber, to each connected BSS 40 in the group call area.
- the BSS receiving the UPLINK SEIZED command then forwards an UPLINK BUSY message 38 to each cell that it parents in the group call area for transmission on the group call channels.
- Further information is provided in a separate VGCS_ADD_INFO message from the MSC-R to each connected BSC in the group call area.
- the BSC transmits this information as a separate VGCS ADD info message on the air interface.
- the present invention transmits this information within the UPLINK BUSY message.
- the UPLINK BUSY messages are periodically retransmitted on the downlink of the group channel. Sending of UPLINK BUSY messages may be triggered by the events as set out above.
- the BSC In order for the BSC to transmit the talker information in the UPLINK BUSY, either the MSC also includes the information in the UPLINK SEIZED, or the BSC delays sending the UPLINK BUSY until the VGCS additional information message is received from the MSC.
- Advantages of the present invention include reduction in FER, i.e. better speech quality than in the case when the invention is not used, and the feature that the MS receives the identity of the talker earlier. It will be received as soon as the MS identifies that the uplink is in use. Additionally, if the VGCS additional information is not sent as a separate message on the A-interface (BSS to MSC) then less signalling messages would be sent on this interface, which although not of noticeable gain to the user, reduces the signalling load within the network.
- Fig. 3 shows signalling information required for a voice group call uplink access in the anchor MSC with talker priority "privileged subscriber" for the present invention, in which transmission of the VGCS additional information is merged into an existing message.
- the steps involved are similar to those in the conventional standardised mechanism of Fig. 2 , up to the point of the UPLINK REQUEST 27.
- the new UPLINK SEIZED message 39A now contains the talker identity which has been ascertained from a visiting location register and is sent on the A-interface between the MSC-A 35 and the BSC in each BSS 40.
- the UPLINK BUSY message 38 on the air interface between the BSS 20 and MS 41 now contains the talker identity.
- the UPLINK SEIZED command may also be sent 39B from the MSC-R 36, as well as sent 39A from the MSC-A 35. This depends upon whether an MS in another part of the network with another MSC is connected to the voice group. Although the example of Fig. 3 shows only one MS connected to BSS1 20, this is to simplify the diagram and in practice there are usually multiple MSs connected to any BSS 20,40.
- the talker identifier found in the visiting location register is very long, it might exceed the available number of bytes in the UPLINK BUSY message. However, the configuration of the identifier is under the control of the operator who can choose to configure the talker identifier for each member of that group, so that it is made to fit within the available space.
- the UPLINK BUSY message is repeated on the air interface, typically every 5 seconds. This is so that late joiners to the group channel are told that the UPLINK is in use.
- the UPLINK BUSY message can indicate the priority of the active member. However, as the message is sent in UNACKNOWLEDGED mode, other listeners who did not receive the message may just hear somebody else talking.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Exchange Systems With Centralized Control (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
- Machine Translation (AREA)
Abstract
Description
- This invention relates to a method of enhancing voice communication between a group of users in a network, in particular for global system for mobile communication (GSM) based systems, such as GSM edge radio access network (GERAN).
- GERAN includes a voice group service (VGCS) whereby multiple users can communicate. Whichever user has control of the uplink, blocks all other users from speaking. More recently, a change in the talker has been followed by an indication of who the party talking is. However, this enhancement requires additional signalling and there is a delay in providing the information to other members of the group. In addition, the identity information is provided by stealing frames from the voice channel, which can have an impact on voice quality for the call, under certain circumstances.
-
WO2005/055632 discloses a method and system for providing the active members of a Voice Group Call Service with additional information. The additional information is transmitted in a message on the associated control channel for the downlink traffic channel of the voice group simultaneously with a voice call. -
US2004/077358 discloses Methods and systems for distributed arbitration in a push-to-talk communications system. User communications terminals execute a distributed arbitration algorithm to determine which terminal should have possession of a communications channel among terminals with simultaneously pending talk requests. A server may notify the terminals of the identification of a terminal that is using the communications channel. - "3GPP; Technical Specification Group Core Network and Terminals; VGCS; Stage 2 (Rel. 7)", June 2005 discloses a system in which additional information about a new talker is sent in "VGCS_ADD_INFO" messages between an MSC and a BSC, and between a BSC and several listeners. It also mentions that "UPLINK FREE" and "UPLINK BUSY" messages can be sent by a BSC to mobile stations, to indicate whether an uplink channel is free or busy.
-
EP1734772 is prior art under Article 54(3) EPC, and discloses method of uplink preemption by UEs later entering a trunking group with an established group call. It teaches "UPLINK FREE" and "UPLINK BUSY" messages being sent to user equipment to notify them of the status of an uplink channel. - In accordance with the present invention, a method of enhancing communication between a group of users in a network voice within a voice group call service is provided, as defined in
claim 1. - A second aspect of the present invention provides a base station as defined in Claim 7.
- In the present invention, talker identity is combined with other data which is already sent and is transmitted in an existing message with the other data.
- Preferably, the data and identifier are transmitted in an existing message.
- Preferably, the identifier is transmitted across a network to base station interface.
- Preferably, the interface is between a mobile switching centre and a base station controller.
- Preferably, the data and identifier are transmitted across an air interface between a base station and the users.
- Preferably, the data and identifier are contained within one radio block on the air interface.
- Preferably, the existing message is an uplink busy message.
- Preferably, the mobile terminal is one of a mobile telephone, a personal digital assistant, or a personal computer.
- Preferably, the identifier is a pre-allocated talker identifier.
- Preferably, the information appears on a visual display of the other users.
- Preferably, the network is a mobile communication network.
- Although, various type of communication network could make use of the method of the present invention, preferably, the mobile communication network is a global system for mobile communication network.
- A method of enhancing voice communication between a group of users in a network according to the present invention will now be described with reference to the accompanying drawings in which:
-
Figure 1 is a block diagram of a system for carrying out the method of the present invention; -
Figure 2 illustrates conventional signalling information for a voice group call where the uplink access is issued in a cell where the parented BSS is connected to the Anchor MSC (MSC-A); and, -
Figure 3 illustrates signalling information for a voice group call in accordance with the present invention. -
Figure 1 illustrates a system in which the method of the present invention is carried out. Anetwork 1 communicates with mobile devices (MS) 5,6,7,8 via different base stations according to the position of the mobile device. In this example a first base station sub-system (BSS) 3 is shown, with two MSs 7, 8 within ranges of this base station. Asecond BSS 11, communicates with twoother MSs interface 10 between a mobile switching centre (MSC) 2 in the network and a base station controller (BSC) 4 in each base station subsystem (BSS) 3, 11 The BSS is made up of the BSC 4 and a number of base station transceivers (BTS) 12. The BSC connects to the MSC and the BTS provides a radio interface to the MS. The base station controller 4 and mobile devices 7, 8 communicate via the BTS over anair interface 13. Each mobile device is provided with adisplay 9. - Within the GERAN standardisation process various enhancements for a voice group service (VGCS) have been proposed. A feature of these enhancements is provision of talker identity information in a message called VGCS additional information. This feature provides the identity of the talker to the current listeners of the voice group call, within the VGCS additional information message. As required by the standard, the VGCS additional information is sent on an air interface on two logical channels, a fast associated control channel (FACCH) and a slow associated control channel (SACCH).
- The VGCS additional information message is transmitted once on the downlink FACCH and periodically on the downlink SACCH, so that late joiners are provided with the identity of the current talker. The transmission of messages on the FACCH steals speech frames, thus these transmissions have an impact on voice quality.
- In the voice group call service only one service subscriber has access to talk at any one time. In order for the network to control access to talk in the group call, the network transmits status messages on the downlink of the voice group channel to indicate whether the uplink is free or busy, using an UPLINK FREE and an UPLINK BUSY message respectively. If the uplink is busy, then the network may also indicate a priority of a call that is using the uplink. Both the UPLINK FREE and UPLINK BUSY messages are sent on the FACCH of the voice group channel. Thus, the transmission of the UPLINK BUSY has an impact on the voice quality of the speech received on the downlink of the voice group call channel.
- Each UPLINK FREE and UPLINK BUSY message is contained within one radio block. Based on current performance, one radio block takes approximately 20ms to transmit and contains 184 bits of information, or 23 bytes. In the voice group call service, the talker typically talks on average for 5s. Thus, in this scenario, the transmission of the talker identity steals one block in 250, resulting in a frame erasure rate (FER) of 0.4%. If the UPLINK BUSY messages are transmitted every 5s, as currently proposed in the standards, then this results in a combined FER of 0.8%, assuming that 2 blocks are stolen in every 250. However, in a situation where both the UPLINK BUSY message and the talker identity are sent within the first second of the talker starting to talk, then 2 blocks are stolen in 50, resulting in a FER exceeding 2%, which may not be acceptable. The standard also requires that the VGCS additional information is sent in a separate message on an A-interface from the mobile switching centre to the base station controller. Sending of an UPLINK BUSY message by a BSS may be triggered as a result of the BSS receiving the following events, UPLINK ACCESS from the
MS - In
Fig. 2 , signalling information required for a voice group call uplink access in an anchor MSC (MSC-A) 35 with talker priority given to "privileged subscriber," in accordance with the current standardised solution for the transmission of the talker information, is illustrated. A first base station sub-system (BSS1) 20 sends an UPLINKFREE message 21 to a mobile station (MS) 41. The MS sends an UPLINKACCESS request 23 for privileged subscriber to theBSS 20 which sends a VGCS UPLINKGRANT message 24 and an UPLINKBUSY message 25, for privileged subscriber, back to the MS. Further, UPLINK BUSY messages are sent in each of the cells that the BSS parents that are in the group call area. A set asynchronous balanced mode (SABM) start-up command 26 is sent from the MS to the BSS including alayer 3 message (L3msg), such as a talker indication message which contains the mobile's identity. The BSS replies with an unnumbered acknowledgement (UA) 28. - An
UPLINK REQUEST 27 is sent to MSC-A 35 which may reply with an UPLINK REQUEST ACKNOWLEDGE 30 to the BSC that originated the uplink request and an UPLINK SEIZED command to each of the remaining connected BSCs (not shown) that are in the group call area The mobile device has sent its identifier, typically, IMSI, in the L3msg when establishing the signalling link on the air interface. The L3msg is then included in the UPLINK REQUEST message that is sent by the BSC to the mobile switching centre and the MSC-A checks a subscription for talker priority and retrieves additional information, such as a talker identifier from a visiting location register (not shown) which is what is sent to other members of the group. The sending of theUplink Request 27 is delayed until the link on the air interface is established. The link is established by a SABM/UA exchange, the purpose of which is so that the identity of the MS can be obtained and included in the Uplink Request that is sent to the MSC. - The additional information, when present, is then transmitted 32A by MSC-A to the
first BSS 20 and also transmitted 32B to each other connected BSC in the group call area. The BSS then transmits this information as a separate VGCSADD info message 33 on the air interface. - MSC-
A 35 sends a FORW._GROUP CALL_SIGN.message 29 to relay MSC (MSC-R) 36 including an uplink seized command, privileged subscriber data and the VGCS additional information The MSC-R then sends an UPLINK SEIZED 39B for privileged subscriber, to eachconnected BSS 40 in the group call area. The BSS receiving the UPLINK SEIZED command then forwards an UPLINKBUSY message 38 to each cell that it parents in the group call area for transmission on the group call channels. Further information is provided in a separate VGCS_ADD_INFO message from the MSC-R to each connected BSC in the group call area. The BSC then transmits this information as a separate VGCS ADD info message on the air interface. Typically, this information is talker identity, although it could equally be other information which the new talker wishes to share with all parties in the group, such as a location map for emergency services, or a geographical or person's name which might be difficult to understand and correctly record if given over air. The conversation within the group continues with the new active talker or privileged subscriber in control. - The need to provide information to the VGCS listeners regarding the identity of the current talker gives rise to a potentially unacceptable FER, which the present invention addresses. To reduce the impact on the voice quality as a result of the transmission of the talker identity information on the air interface, the present invention transmits this information within the UPLINK BUSY message. The UPLINK BUSY messages are periodically retransmitted on the downlink of the group channel. Sending of UPLINK BUSY messages may be triggered by the events as set out above. In order for the BSC to transmit the talker information in the UPLINK BUSY, either the MSC also includes the information in the UPLINK SEIZED, or the BSC delays sending the UPLINK BUSY until the VGCS additional information message is received from the MSC.
- If this were done the other way around, with the UPLINK BUSY and VGCS additional information messages combined by including the contents of the UPLINK BUSY message within the VGCS additional information message, then legacy mobiles would be unable to receive an indication that the uplink is busy, which is not desirable.
- Advantages of the present invention include reduction in FER, i.e. better speech quality than in the case when the invention is not used, and the feature that the MS receives the identity of the talker earlier. It will be received as soon as the MS identifies that the uplink is in use. Additionally, if the VGCS additional information is not sent as a separate message on the A-interface (BSS to MSC) then less signalling messages would be sent on this interface, which although not of noticeable gain to the user, reduces the signalling load within the network.
-
Fig. 3 shows signalling information required for a voice group call uplink access in the anchor MSC with talker priority "privileged subscriber" for the present invention, in which transmission of the VGCS additional information is merged into an existing message. The steps involved are similar to those in the conventional standardised mechanism ofFig. 2 , up to the point of theUPLINK REQUEST 27. Instead of simply sending the UPLINK SEIZED message as before, the new UPLINK SEIZEDmessage 39A now contains the talker identity which has been ascertained from a visiting location register and is sent on the A-interface between the MSC-A 35 and the BSC in eachBSS 40. Similarly, the UPLINKBUSY message 38 on the air interface between theBSS 20 andMS 41 now contains the talker identity. Thus, the number of signalling messages required at this step is halved and the frame erasure rate is kept low, despite the addition of further information. The UPLINK SEIZED command may also be sent 39B from the MSC-R 36, as well as sent 39A from the MSC-A 35. This depends upon whether an MS in another part of the network with another MSC is connected to the voice group. Although the example ofFig. 3 shows only one MS connected to BSS1 20, this is to simplify the diagram and in practice there are usually multiple MSs connected to anyBSS - If the talker identifier found in the visiting location register is very long, it might exceed the available number of bytes in the UPLINK BUSY message. However, the configuration of the identifier is under the control of the operator who can choose to configure the talker identifier for each member of that group, so that it is made to fit within the available space.
- The UPLINK BUSY message is repeated on the air interface, typically every 5 seconds. This is so that late joiners to the group channel are told that the UPLINK is in use. The UPLINK BUSY message can indicate the priority of the active member. However, as the message is sent in UNACKNOWLEDGED mode, other listeners who did not receive the message may just hear somebody else talking.
Claims (12)
- A method of enhancing voice communication between a group of users in a network within a voice group call service, the method comprising:providing data for transmission to the group of users, said data indicating that an uplink channel is busy;characterised in that the method comprises:adding to the data an identifier of a new active user (41); andcausing the identifier and the data indicating that the uplink channel is busy to be sent to the group of users (7, 8) within a single message (38) indicating that the uplink channel is busy.
- A method according to claim 1, wherein the identifier and the data indicating that the uplink channel is busy are transmitted across an air interface (13) between a base station and the group of users (7, 8).
- A method according to claim 2, wherein the identifier and the data indicating that the uplink channel is busy are contained within one radio block on the air interface (13).
- A method according to any one of claims 1 to 4, comprising receiving a message (39A) comprising the identifier.
- A method according to claim 4, wherein the receiving the message (39A) comprising the identifier comprises receiving the message (39A) comprising the identifier from a mobile switching centre (2, 35).
- A method according to claim 4 or claim 5, wherein the message (39A) comprises a message indicating that the uplink channel is seized.
- A base station (12), comprising:means for providing data for transmission to a group of users (7, 8) in a network within a voice group call service, said data indicating that an uplink channel is busy;characterised in that the base station (12) comprises:means for adding to the data an identifier of a new active user (41); andmeans for causing the identifier and the data indicating that the uplink channel is busy to be sent to the group of users (7, 8) within a single message (3 8) indicating that the uplink channel is busy.
- A base station (12) according to claim 7, wherein the means for causing is arranged to cause the single message (38) to be sent across an air interface (13) between the base station (12) and the group of users (7, 8).
- A base station (12) according to claim 8, wherein the means for causing is arranged to cause the single message (38) to be sent within one radio block on the air interface (13).
- A base station (12) according to any one of claims 7 to 9, comprising means for receiving a message (39A) comprising the identifier.
- A base station (12) according to claim 10, wherein the means for receiving a message (39A) comprising the identifier is arranged to receiving the message (39A) comprising the identifier from a mobile switching centre (2, 35).
- A base station (12) according to claim 10 or claim 11, wherein the message (39A) comprises a message indicating that the uplink channel is seized.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0517165A GB2429604A (en) | 2005-08-23 | 2005-08-23 | Providing information relating to a new active user in a voice group call service |
PCT/GB2006/050245 WO2007023311A2 (en) | 2005-08-23 | 2006-08-18 | Method of enhancing voice communication between a group of users in a network |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1929817A2 EP1929817A2 (en) | 2008-06-11 |
EP1929817B1 true EP1929817B1 (en) | 2010-04-07 |
Family
ID=35098077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06779599A Active EP1929817B1 (en) | 2005-08-23 | 2006-08-18 | Method of enhancing voice communication between a group of users in a network |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090197537A1 (en) |
EP (1) | EP1929817B1 (en) |
AT (1) | ATE463938T1 (en) |
DE (1) | DE602006013484D1 (en) |
GB (1) | GB2429604A (en) |
WO (1) | WO2007023311A2 (en) |
ZA (1) | ZA200801502B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8620330B2 (en) * | 2009-04-14 | 2013-12-31 | Motorola Solutions, Inc. | Relay of delayed transmitter identity across an audio patch |
CN101715213B (en) * | 2009-11-24 | 2013-08-07 | 中兴通讯股份有限公司 | Conversation optimization processing method and system |
US8295825B2 (en) * | 2010-11-30 | 2012-10-23 | Motorola Solutions, Inc. | Method to facilitate late joining of a call |
CN102802122A (en) * | 2011-05-24 | 2012-11-28 | 中兴通讯股份有限公司 | Downlink detection method and device for group call channel, and base station |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4603236A (en) * | 1983-10-11 | 1986-07-29 | Gte Communication Systems Corp. | Secretarial answering system with distributed processing |
JP3524285B2 (en) * | 1996-09-11 | 2004-05-10 | 株式会社東芝 | Communication device and communication method thereof |
UA53669C2 (en) * | 1996-11-18 | 2003-02-17 | Сіменс Акцієнгезельшафт | Method and device for setting configuration of a radio channel for connecting mobile and stationary station of a radio communication system in batch data communication with time-division multiplex |
US20020119821A1 (en) * | 2000-05-12 | 2002-08-29 | Sanjoy Sen | System and method for joining a broadband multi-user communication session |
JP3805610B2 (en) * | 2000-09-28 | 2006-08-02 | 株式会社日立製作所 | Closed group communication method and communication terminal device |
EP1255368A1 (en) * | 2001-04-30 | 2002-11-06 | Siemens Information and Communication Networks S.p.A. | Method to perform link adaptation in enhanced cellular communication systems with several modulation and coding schemes |
US20020176382A1 (en) * | 2001-05-24 | 2002-11-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and system for integration of second generation and third generation wireless networks |
US6963543B2 (en) * | 2001-06-29 | 2005-11-08 | Qualcomm Incorporated | Method and system for group call service |
US7571126B2 (en) * | 2001-10-03 | 2009-08-04 | Toshiba Corporation | System and method for document processing operation accounting |
US6885874B2 (en) * | 2001-11-27 | 2005-04-26 | Motorola, Inc. | Group location and route sharing system for communication units in a trunked communication system |
US7058400B2 (en) * | 2002-06-14 | 2006-06-06 | Denso Corporation | Forward and reverse link channels dynamic processing gain |
US20040077358A1 (en) * | 2002-10-18 | 2004-04-22 | Togabi Technologies | Methods and systems for distributed arbitration in a push-to-talk communications system |
US20040249949A1 (en) * | 2003-03-27 | 2004-12-09 | Christophe Gourraud | Voice and multimedia distribution using Push-To-Talk (PTT) subscribers' group |
JP3874415B2 (en) * | 2003-04-16 | 2007-01-31 | 株式会社スクウェア・エニックス | Mail exchange system and method, mail exchange terminal device, and program |
EP1515570B1 (en) * | 2003-09-11 | 2007-01-10 | Sony Ericsson Mobile Communications AB | Multiparty call of portable devices with party positioning identification |
US20070105569A1 (en) * | 2003-11-21 | 2007-05-10 | T-Mobile Deutschland Gmbh | Short message for voice group call service |
ATE454794T1 (en) * | 2003-11-21 | 2010-01-15 | T Mobile Deutschland Gmbh | ADDITIONAL INFORMATION FOR A VOICE GROUP CALL SERVICE |
GB2419067A (en) * | 2004-10-06 | 2006-04-12 | Sharp Kk | Deciding whether to permit a transaction, based on the value of an identifier sent over a communications channel and returned over a secure connection |
US20060077958A1 (en) * | 2004-10-08 | 2006-04-13 | Satya Mallya | Method of and system for group communication |
US20060080407A1 (en) * | 2004-10-12 | 2006-04-13 | Motorola, Inc. | Multimedia session establishment in a user entity having audio floor control |
CN100442869C (en) * | 2005-04-18 | 2008-12-10 | 华为技术有限公司 | Method for uplink rob of user getting in cluster group latterly |
-
2005
- 2005-08-23 GB GB0517165A patent/GB2429604A/en active Pending
-
2006
- 2006-08-18 AT AT06779599T patent/ATE463938T1/en active
- 2006-08-18 EP EP06779599A patent/EP1929817B1/en active Active
- 2006-08-18 WO PCT/GB2006/050245 patent/WO2007023311A2/en active Application Filing
- 2006-08-18 US US11/990,946 patent/US20090197537A1/en not_active Abandoned
- 2006-08-18 DE DE602006013484T patent/DE602006013484D1/en active Active
-
2008
- 2008-02-14 ZA ZA200801502A patent/ZA200801502B/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA200801502B (en) | 2008-12-31 |
DE602006013484D1 (en) | 2010-05-20 |
GB2429604A (en) | 2007-02-28 |
GB0517165D0 (en) | 2005-09-28 |
WO2007023311A3 (en) | 2008-04-24 |
EP1929817A2 (en) | 2008-06-11 |
US20090197537A1 (en) | 2009-08-06 |
WO2007023311A2 (en) | 2007-03-01 |
ATE463938T1 (en) | 2010-04-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6751468B1 (en) | Systems and methods for providing push to talk feature for wireless communication systems | |
US6577874B1 (en) | Methods and systems for providing temporary identification numbers for mobile terminals | |
US7099291B2 (en) | Dispatch call origination and set up in a CDMA mobile communication system | |
EP0979580B1 (en) | Method and apparatus for delivering and presenting calling name information in a wireless communications system | |
US8731510B2 (en) | Method for transmitting urgent alert messages to sets of mobile terminals located in cells of a radio communication network, and related radio network controller | |
JP2005532703A (en) | System and method for queuing call requests in a wireless dispatch system | |
JP2016506092A (en) | Public alarm system display to users in connected mode | |
KR100740022B1 (en) | Method and apparatus for reducing call setup time | |
CN103581839A (en) | Broadband trunking service realizing method and broadband trunking service realizing system | |
EP1929817B1 (en) | Method of enhancing voice communication between a group of users in a network | |
EP3567927B1 (en) | Access method, and terminal | |
CN111901895B (en) | Method and device for establishing user plane | |
CN1977553B (en) | Method and apparatus for call setup | |
CN110621054B (en) | Routing method, base station and communication system for multimedia broadcast multicast service | |
EP1773077B1 (en) | A method of indicating a channel available for sending uplink access request and corresponding system, base station and mobile station | |
CN101742418B (en) | Method, system and equipment for informing short data capacity of group calling | |
EP2648433A1 (en) | Access method and device for user in exception, and communication system | |
US7263364B2 (en) | Data communication method for mobile communication system | |
US8195207B2 (en) | Method for the transmission of data to at least one listening user of an on-going group call immediately after switching speakers | |
KR100561675B1 (en) | Method for Providing Called Party Location in Mobile Communication Network | |
KR101765895B1 (en) | Apparatus and Method for Providing Ring Back Tone Service, Server for Providing Ring Back Tone and Driving Method Thereof | |
CN104509138A (en) | User information notification method and mobile service switching center | |
EP2055119A2 (en) | Method and system for wireless communication | |
CN101001424A (en) | Method and system of service user applicating special uplink |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080314 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
17Q | First examination report despatched |
Effective date: 20080929 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: H04W 4/10 20090101AFI20090930BHEP |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REF | Corresponds to: |
Ref document number: 602006013484 Country of ref document: DE Date of ref document: 20100520 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20100407 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20100407 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100718 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100807 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100708 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100526 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100809 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 |
|
26N | No opposition filed |
Effective date: 20110110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100831 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100818 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100818 Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101008 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100407 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20100707 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 602006013484 Country of ref document: DE Owner name: NOKIA SOLUTIONS AND NETWORKS GMBH & CO. KG, DE Free format text: FORMER OWNER: NOKIA SIEMENS NETWORKS GMBH & CO. KG, 81541 MUENCHEN, DE Effective date: 20140731 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: HC Ref document number: 463938 Country of ref document: AT Kind code of ref document: T Owner name: NOKIA SOLUTIONS AND NETWORKS GMBH & CO. KG, DE Effective date: 20141120 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD Owner name: NOKIA SOLUTIONS AND NETWORKS GMBH & CO.KG, DE Effective date: 20150211 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 602006013484 Country of ref document: DE Owner name: NOKIA TECHNOLOGIES OY, FI Free format text: FORMER OWNER: NOKIA SOLUTIONS AND NETWORKS GMBH & CO. KG, 81541 MUENCHEN, DE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20200402 AND 20200408 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230711 Year of fee payment: 18 Ref country code: GB Payment date: 20230629 Year of fee payment: 18 Ref country code: AT Payment date: 20230725 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20230630 Year of fee payment: 18 Ref country code: FR Payment date: 20230703 Year of fee payment: 18 Ref country code: DE Payment date: 20230703 Year of fee payment: 18 |